To date, 58 U.S. nuclear submarines have been equipped with Sperry Marine VMS-based navigation systems, and 92 percent of them have been certified to use ECDIS-N as the primary navigation plot.

• 迄今为止，美国的58艘核潜艇都已配备了斯佩里海事VMS导航系统，其中92%25已经获得认证，使用ECDIS-N作为主要的导航图。